An electromagnetic induction welding apparatus for automatically matching a welding member

Abstract

The utility model relates to electromagnetic induction welding equipment technical field, concretely is a kind of electromagnetic induction welding equipment of automatic matching welding piece, including host computer, flexible coil that can be bent, the first clamping block and second clamping block for clamping or releasing welding piece and can relative movement, flexible coil is laid in the first clamping block, second clamping block and host computer, the first clamping block, second clamping block is equipped with the contour sensor for identifying the welding piece in welding area respectively;The first clamping block, second clamping block are further respectively equipped with multiple servo motors and multiple slider units connected with servo motor, multiple slider units are connected with the different point position of flexible coil;The first clamping block, second clamping block are further respectively equipped with temperature sensor for the temperature distribution of real-time detection welding position;Contour sensor and temperature sensor are all with host computer signal connection, host computer is electrically connected with each servo motor, and each servo motor adjusts the shape of flexible coil through slider unit to adapt to the shape of welding piece.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic induction welding equipment technology, and in particular to an electromagnetic induction welding equipment that automatically matches weldments. Background Technology

[0002] Electromagnetic induction welding is a welding process that uses the principle of electromagnetic induction to generate heat. For example... Figure 1 As shown, the basic principle is that when high-frequency or medium-frequency alternating current passes through an induction coil, a strong alternating magnetic field is generated around it. When a metal workpiece is placed in this magnetic field, closed eddy currents are induced inside it. These eddy currents generate Joule heating under the resistance of the workpiece, thus heating the workpiece itself and achieving the purpose of heating and welding. This heating method has the advantages of being localized, rapid, and non-contact, and can heat the filler metal to its melting point in a very short time while keeping the base material at a relatively low temperature, thereby achieving efficient joining. Theoretically, due to the skin effect and the distribution characteristics of eddy currents, the heating is relatively uniform, which helps to reduce welding deformation and defects. However, existing electromagnetic induction welding equipment has significant limitations in practical applications, which seriously restricts its versatility and the stability of welding quality. First, induction coils suffer from poor versatility and high customization costs. Due to the "proximity effect" of electromagnetic induction, the induction coil must maintain close coupling (i.e., a uniform and small gap) with the outline of the workpiece to achieve the highest energy conversion efficiency and ensure uniform heating. Given the wide variety of shapes and sizes of workpieces, to ensure welding quality, it is usually necessary to design and manufacture a dedicated rigid induction coil for each specific workpiece. This leads to a "one workpiece, one coil" production model, making the coils non-universal and significantly increasing equipment costs, spare parts inventory, and management complexity.

[0003] Secondly, the shape of the coil is often compromised due to space constraints, leading to uneven heating. In actual assembly or welding environments, the limited internal space of the equipment or the complex features of the workpiece itself, such as protrusions or depressions, often force designers to modify the ideal, symmetrically distributed closed-loop coil (such as an O-type) into an open, asymmetrical shape (such as a U-type). The magnetic field distribution generated by this asymmetrical coil is inherently uneven, directly causing differences in the heating rate and final temperature of different areas of the workpiece, seriously affecting the uniformity and reliability of the welding quality.

[0004] Furthermore, welding quality is extremely sensitive to the position of the weldment, requiring stringent alignment. For example... Figure 2The magnetic field is weak at the connection point between the inductor lead and the inductor coil. Therefore, the center of the inductor's magnetic field is not necessarily the geometric center of the inductor coil. Thus, to achieve the optimal heating rate and temperature, the solder joint should be offset towards the lead area for effective compensation. The magnetic flux density generated by the inductor coil decreases rapidly with increasing distance from the coil. Therefore, if the solder joint is offset from the center of the coil's magnetic field, areas closer to the coil will overheat due to stronger coupling, while areas further away will be underheated. Furthermore, the connection point of the inductor coil's power lead is typically an inherently weak magnetic field area. To compensate for insufficient heating here, operators often need to manually offset the solder joint towards the lead based on experience. This experience-dependent operation is difficult to control precisely, has poor repeatability, and easily leads to soldering defects or scrap.

[0005] In summary, existing technologies lack an electromagnetic induction welding device that can automatically adapt to different workpiece shapes and optimize welding position and temperature field. There is an urgent need for a new solution with high versatility, adaptability, and intelligent process control capabilities. Utility Model Content

[0006] The purpose of this invention is to provide an electromagnetic induction welding device that can automatically adapt to different weldment shapes and optimize the welding position and temperature field.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an electromagnetic induction welding device for automatically matching weldments, comprising a main unit, a flexible coil, and a shape and position adjustment mechanism for clamping or releasing weldments and capable of relative movement; the shape and position adjustment mechanism includes a first clamping block and a second clamping block, the flexible coil being disposed within the first clamping block, the second clamping block, and the main unit; the first clamping block and the second clamping block are respectively provided with contour sensors for identifying weldments within the welding area; the first clamping block and the second clamping block are also respectively provided with multiple servo motors and multiple slider units connected to the servo motors, the multiple slider units being connected to different points of the flexible coil; the first clamping block and the second clamping block are also respectively provided with temperature sensors for real-time detection of the temperature distribution at the welding location; the contour sensors and temperature sensors are both signal-connected to the main unit, the main unit is electrically connected to each servo motor, and each servo motor pulls or pushes different points on the flexible coil through the slider units connected to it to adjust the shape of the flexible coil.

[0008] Preferably, the first clamping block and the second clamping block are respectively provided with an arc-shaped storage area one and an arc-shaped storage area two at their relative positions, and both the arc-shaped storage area one and the arc-shaped storage area two accommodate a part of the flexible coil.

[0009] Preferably, the flexible coil has a cooling cavity inside to force cooling of the flexible coil during operation.

[0010] Preferably, the first clamping block and the second clamping block are respectively provided with a plurality of first slide grooves and second slide grooves for accommodating servo motors, and the slider unit connected to the servo motors is also provided in the first slide grooves and second slide grooves, and the first slide grooves and second slide grooves are respectively connected to the arc-shaped storage area one and the arc-shaped storage area two.

[0011] Preferably, multiple first grooves are evenly distributed along the circumference of the arc-shaped storage area one; multiple second grooves are evenly distributed along the circumference of the arc-shaped storage area two.

[0012] Preferably, the main unit has a first coil storage area connected to the first arc-shaped storage area and a second coil storage area connected to the second arc-shaped storage area.

[0013] Preferably, the main unit is equipped with a first stepper motor and a second stepper motor to drive the first clamping block and the second clamping block to move relative to each other to achieve clamping or separation; the first stepper motor is connected to a first gear, and the second stepper motor is connected to a second gear; the first clamping block is slidably connected to a first T-shaped groove on the main unit through a first T-shaped slider, and the first T-shaped slider is provided with a first rack that meshes with the first gear; the second clamping block is slidably connected to a second T-shaped groove on the main unit through a second T-shaped slider, and the second T-shaped slider is provided with a second rack that meshes with the second gear.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows: By employing a flexible coil composed of multiple strands of fine copper wire, combined with a multi-degree-of-freedom shape and position adjustment mechanism consisting of multiple servo motors and slider units, this equipment can dynamically and precisely adjust the shape and size of the flexible coil, automatically fitting it to weldments of different shapes and sizes. This completely changes the traditional rigid mode of one coil per weldment, greatly improving the equipment's versatility and reducing operating costs.

[0015] The equipment automatically identifies the three-dimensional contour and position of the workpiece using contour sensors mounted on the clamping block. The host machine controls the form and position adjustment mechanism to optimize the distance between the flexible coil and the workpiece surface. This process automatically compensates for uneven magnetic field distribution caused by irregular workpiece shapes or the asymmetry of traditional coils, ensuring uniform heating from the source and significantly improving welding quality. Temperature sensors integrated on the clamping block scan the welding area in real time and feed the data back to the host machine. Based on the deviation between the real-time temperature and the set process curve, the host machine drives the form and position adjustment mechanism to dynamically fine-tune the local position of the flexible coil, strengthening or weakening the magnetic field coupling in the corresponding area. This forms a closed-loop temperature control system of detection, feedback, and adjustment, effectively eliminating localized overcooling or overheating.

[0016] The flexible coil assembly has an internal cooling cavity, through which a cooling medium can be introduced to forcibly cool the coil, which generates heat due to its own resistance during operation. This effectively prevents the risk of efficiency reduction, deformation, or burnout caused by high-temperature annealing of the coil, ensuring long-term stability of induction heating efficiency and significantly extending the service life of the core components of the equipment.

[0017] From component placement, contour recognition, adaptive coil matching, heating and welding, dynamic temperature control to final coil reset and component removal, the entire process is automatically controlled by the host machine. This significantly reduces reliance on operator experience, improves production efficiency and process consistency, and is suitable for both large-scale and flexible production needs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an electromagnetic coil welding structure in the background art; Figure 2 This is a schematic diagram of the magnetic field distribution in the electromagnetic coil welding structure in the background art; Figure 3 This is a three-dimensional structural diagram of an electromagnetic induction welding device for automatically matching weldments proposed in this utility model; Figure 4 for Figure 3 A cross-sectional view of the XY plane; Figure 5 This is a cross-sectional schematic diagram of the flexible coil involved in this utility model; Figure 6 This is a schematic diagram showing the cooperation between the servo motor and the slider unit of this utility model; Figure 7 for Figure 6 A schematic diagram showing the hidden slider base in the middle; Figure 8 for Figure 3 Schematic diagram of the cross section at point AA; Figure 9 for Figure 8 Enlarged view of point B in the middle; Figure 10 This is a schematic diagram showing the separation of the first clamping block and the second clamping block in the electromagnetic induction welding equipment proposed in this utility model; Explanation of reference numerals in the attached drawings: 1. Welded component; 2. Main unit; 21. First T-slot; 22. Second T-slot; 23. First coil storage area; 24. Second coil storage area; 25. First gear cavity; 26. Second gear cavity; 3. Shape and position adjustment mechanism; 4. First clamping block; 41. First T-slider; 411. First rack; 412. First stepper motor; 413. First gear; 42. First contour sensor; 43. First temperature sensor; 44. First infrared sensor; 45. First slide groove; 46. Arc-shaped storage area one; 47. First motor slot; 5. Second clamping block; 51. Second T-slider; 511. Second rack; 512. Second stepper motor; 513. Second gear; 52. Second contour sensor; 53. Second temperature sensor; 54. Second infrared sensor; 55. Second slide rail; 56. Arc-shaped storage area two; 57. Second motor slot; 6. Flexible coil; 61. Coil A section; 62. Coil B section; 63. Cooling cavity; 64. Wire core; 65. Copper wire; 66. High-temperature resistant insulation sheath; 7. Servo motor; 71. Driving wheel; 72. First driven wheel; 73. Second driven wheel; 8. Slider unit; 81. Slider seat; 82. Rack; 83. Connecting ring; 9. Electromagnetic latch. Detailed Implementation

[0019] To address the problems mentioned in the background art, this utility model provides an electromagnetic induction welding device for automatically matching weldments, such as... Figure 3 , Figure 4As shown, a host 2, a form and position adjustment mechanism 3 connected to the host 2, a weldment 1 located in the blank area inside the form and position adjustment mechanism 3, and a flexible coil 6 are illustrated. The form and position adjustment mechanism 3 includes a first clamping block 4 and a second clamping block 5. A first T-slot 21 and a second T-slot 22 are provided on the side of the host 2 near the form and position adjustment mechanism 3. A first T-slider 41 and a second T-slider 51 that slide in cooperation with the first T-slot 21 and the second T-slot 22 are provided on the side of the first clamping block 4 and the second clamping block 5 near the host 2. A first infrared sensor 44 and a second infrared sensor 54 are provided on the side of the first clamping block 4 and the second clamping block 5 away from the host 2, and the side of the first clamping block 4 and the second clamping block 5 away from the host 2 can be locked or unlocked by an electromagnetic lock 9. The first clamping block 4 and the second clamping block 5 are respectively equipped with contour sensors for identifying the workpiece 1 within the welding area; wherein the first clamping block 4 has a first contour sensor 42 and a first temperature sensor 43 spaced apart on its arc-shaped inner wall; the first contour sensor 42 can be an OMRON E3Z-LS built-in photoelectric sensor; the first temperature sensor 43 can be an AC-8T infrared / NCV tester. Both the first contour sensor 42 and the first temperature sensor 43 are connected to the host 2 for signal transmission, and the first temperature sensor 43 is used to detect the temperature distribution of the welding area in real time; the workpiece 1 passes through the area enclosed by the inner walls of the first clamping block 4 and the second clamping block 5.

[0020] like Figure 4 In this configuration, a flexible coil 6 is arranged within the first clamping block 4, the second clamping block 5, and the main unit 2. The flexible coil 6 is a bendable cable, including a coil A portion 61 and a coil B portion 62. One end of the coil A portion 61 is housed within the first clamping block 4, and the other end is located within the main unit 2. One end of the coil B portion 62 is housed within the second clamping block 5, and the other end is located within the main unit 2. The first clamping block 4 and the second clamping block 5 are respectively provided with an arc-shaped storage area 1 46 and an arc-shaped storage area 2 56 at opposite positions. The arc-shaped storage area 1 46 accommodates one end of the coil A portion 61, and the arc-shaped storage area 2 56 accommodates one end of the coil B portion 62. The coil A portion 61 and the coil B portion 62 can be electrically disconnected or electrically connected as the first clamping block 4 and the second clamping block 5 open and close. The main unit 2 also includes a first coil storage area 23 and a second coil storage area 24. The first coil storage area 23 accommodates the other end of coil A portion 61; the second coil storage area 24 accommodates the other end of coil B portion 62. The first coil storage area 23 in the main unit 2 is connected to the arc-shaped storage area 46, and the second coil storage area 24 is connected to the arc-shaped storage area 56. The first coil storage area 23 and the second coil storage area 24 are used to accommodate or release the excess length of the flexible coil 6 when adjusting its shape, so as to maintain the appropriate tension of the flexible coil 6. The first clamping block 4 and the second clamping block 5 clamp the workpiece 1 close to each other, and release the workpiece 1 when they move away from each other.

[0021] See Figure 4 In the first clamping block 4 and the second clamping block 5, there are also multiple servo motors 7 and multiple slider units 8 connected to the servo motors 7, respectively. The multiple slider units 8 are connected to different points on the flexible coil 6. The host 2 is electrically connected to each servo motor 7. Each servo motor 7 pulls or pushes different points on the flexible coil 6 through the slider units 8 connected to it to adjust the shape of the flexible coil 6. Correspondingly, the first clamping block 4 has multiple first slide grooves 45 for accommodating the servo motors 7, and the second clamping block 5 has multiple second slide grooves 55 for accommodating the servo motors 7. The first slide grooves 45 and the second slide grooves 55 are respectively connected to the arc-shaped storage area 1 46 and the arc-shaped storage area 2 56. The adjacent first slide grooves 45 are evenly distributed along the circumference of the arc-shaped storage area 1 46; the adjacent second slide grooves 55 are evenly distributed along the circumference of the arc-shaped storage area 2 56. The slider unit 8 connected to the servo motor 7 is located on one side of the first slide groove 45 or the second slide groove 55. The first slide groove 45 is connected to the first motor groove 47, and the second slide groove 55 is connected to the second motor groove 57. The servo motors 7 in the first clamping block 4 and the second clamping block 5 are respectively located in the first motor groove 47 and the second motor groove 57.

[0022] like Figure 5 As shown, a cross-sectional schematic diagram of the flexible coil 6 is presented. The outermost layer of the flexible coil 6 is a high-temperature resistant insulating sheath 66, and a cooling cavity 63 is provided inside to forcibly cool the flexible coil 6 during operation. Considering safety and feasibility, the cooling medium introduced into the cooling cavity 63 is gas, and the inlet and outlet of the cooling medium are located in the first coil storage area 23 and the second coil storage area 24. A wire core 64 surrounds the cooling cavity 63, and the wire core 64 is also surrounded by a high-temperature resistant insulating sheath 66. Several copper wires 65 are arranged between the high-temperature resistant insulating sheath 66 around the wire core 64 and the outermost high-temperature resistant insulating sheath 66, and the copper wires 65 are evenly arranged around the wire core 64. The cross-sections of coil A part 61 and coil B part 62 are shown in the diagram. Figure 5 As shown, the power-off or power-on of coil A part 61 and coil B part 62 is achieved by the host 2 controlling the power supply to control the power-on and power-off of the two parts and the current in the coil to adjust the magnetic field strength.

[0023] like Figure 6 The diagram shown is a schematic diagram of the cooperation between the servo motor 7 and the slider unit 8 of this utility model; Figure 7 for Figure 6A schematic diagram showing the hidden slider seat; the servo motor 7 includes a drive wheel 71 located at the motor output end, and a first driven wheel 72 and a second driven wheel 73 meshing with the drive wheel 71 on both sides; the drive wheel 71 is a motor gear, a non-standard spur gear with a module of 1 and 20 teeth; to ensure the stability, timely response, and lifespan of the rack 82, a first driven wheel 72 and a second driven wheel 73 of the same type as the drive wheel 71 are provided. The first driven wheel 72 and the second driven wheel 73 serve as the reduction rack drive gears, non-standard spur gears with a module of 1 and 20 teeth; the slider unit 8 includes a slider seat 81; a rack 82 is slidably mounted inside the slider seat 81, and a connecting ring 83 is provided at one end of the rack 82 near the flexible coil 6; the connecting ring 83 is used to fit onto the flexible coil 6; the slider unit 8 has the function of fixing and maintaining the relative position of the flexible coil 6 through the connecting ring 83, so that the position of the flexible coil 6 changes when the rack 82 moves. The driving wheel 71, the first driven wheel 72, and the second driven wheel 73 are also located within the slider seat 81. Both the first driven wheel 72 and the second driven wheel 73 mesh with the rack 82, so that when the servo motor 7 rotates, the first driven wheel 72 and the second driven wheel 73 rotate accordingly, driving the rack 82 to slide within the slider seat 81. When the host machine 2 issues an adjustment command based on the weldment contour or temperature feedback, the servo motor 7 drives the driving wheel 71 to rotate, thereby driving the first driven wheel 72 and the second driven wheel 73 to rotate. Since both the first driven wheel 72 and the second driven wheel 73 mesh with the rack 82, the rack 82 moves linearly within the slider seat 81. When the rack 82 moves away from the flexible coil storage area, it applies a pulling force to the flexible coil 6 at that point through the connecting ring 83, achieving traction; when the rack 82 moves towards the storage area, it pushes the flexible coil 6 at that point closer to the weldment 1, achieving pushing. By distributing and independently controlling multiple slider units 8 and servo motors 7 circumferentially in the arc-shaped storage area, the positions of multiple points on the flexible coil 6 can be independently adjusted, so that its overall shape dynamically fits the outline of the weldment, and the distance between each area and the weldment can be adjusted in real time to achieve uniform heating.

[0024] Figure 8 for Figure 3 Schematic diagram of the cross section at point AA; Figure 9 for Figure 8Enlarged schematic diagram at point B; the two diagrams illustrate the structural principle of the separation or closure of the first clamping block 4 and the second clamping block 5. The host 2 is equipped with a first stepper motor 412 and a second stepper motor 512. The output ends of the first stepper motor 412 and the second stepper motor 512 face downwards, and their output ends respectively pass through and connect to the middle of the first gear 413 and the second gear 513. The first gear 413 and the second gear 513 are rotatably mounted in the first gear cavity 25 and the second gear cavity 26, respectively. The first T-shaped slider 41 is provided with a first rack 411 that meshes with the first gear 413; the second T-shaped slider 51 is provided with a second rack 511 that meshes with the second gear 513. The first gear 413 and the second gear 513 can be selected as flat gears with 36 teeth and a module of 3. When it is necessary to insert or remove the welding part 1, the host 2 controls the electromagnetic lock 9 to unlock and starts the first stepper motor 412 and the second stepper motor 512. The first stepper motor 412 drives the first gear 413 to rotate counterclockwise. Through meshing with the first rack 411, it drives the first T-shaped slider 41 to slide outward along the first T-shaped groove 21, thereby moving the first clamping block 4 outward. Similarly, the second stepper motor 512 drives the second gear 513 to rotate clockwise. Through meshing with the second rack 511, it drives the second T-shaped slider 51 to slide outward along the second T-shaped groove 22, thereby moving the second clamping block 5 outward. The first rack 411 and the second rack 511 move synchronously, realizing the separation of the first clamping block 4 and the second clamping block 5. After the workpiece is placed in position, the host 2 controls the first stepper motor 412 to rotate clockwise and the second stepper motor 512 to rotate counterclockwise, driving the first clamping block 4 and the second clamping block 5 to move towards each other until they close and are locked by the electromagnetic lock 9, completing the clamping of the workpiece.

[0025] Figure 10 This diagram illustrates the removal of workpiece 1 after welding, showing the first clamping block 4 and the second clamping block 5 in a separated state. The inner side of the second clamping block 5 is equipped with a second contour sensor 52 and a second temperature sensor 53, respectively positioned opposite to the first contour sensor 42 and the first temperature sensor 43. The second contour sensor 52 can be an OMRON E3Z-LS built-in photoelectric sensor; the second temperature sensor 53 can be an AC-8T infrared / NCV tester. Figure 10As shown, when the welding process is completed or a new workpiece needs to be placed, the main unit 2 controls the electromagnetic latch 9 to unlock. The electromagnetic latch 9 can be an Omron electromagnetic safety door switch, model D4NL-2NC+1NC / 1NO, and drives the first clamping block 4 and the second clamping block 5 to move back and forth along the first T-slot 21 and the second T-slot 22, creating sufficient operating space between them. At this time, the welded workpiece 1 can be easily removed, or a new workpiece to be welded can be placed into the predetermined working area enclosed by the inner walls of the first clamping block 4 and the second clamping block 5. This separation state clearly demonstrates the mechanical structure of the equipment that enables rapid loading and unloading of workpieces.

[0026] In use, firstly, the workpiece is placed in the machine, and the first clamping block 4 and the second clamping block 5 are separated, placing the workpiece 1 to be welded in the working area between them. Secondly, the machine is started. The first contour sensor 42 and the second contour sensor 52 on the first clamping block 4 and the second clamping block 5 automatically scan and identify the shape and size of the workpiece 1; the first infrared sensor 44 and the second infrared sensor 54 detect the relative position of the flexible coil 6 and the workpiece 1 through infrared signals, while also acting as safety limits to prevent the flexible coil 6 from colliding with the workpiece. This information is then fed back to the host machine 2. Based on the identification results, the host machine 2 controls the first clamping block 4 and the second clamping block 5 to move towards each other, reliably clamping the workpiece 1 as described above. Figure 3In the next step, the host computer 2, based on the acquired workpiece contour information, controls multiple servo motors 7 to drive the corresponding slider units 8. Each slider unit 8 pulls or pushes different points of the flexible coil 6 through its connecting ring 83, causing the overall shape of the flexible coil 6 to flexibly deform, thereby automatically matching and covering the shape of the workpiece 1, while adjusting the distance between the flexible coil 6 and various parts of the workpiece 1 to a preset optimal value. During this process, the first coil storage area 23 and the second coil storage area 24 are used to store and release excess length of the flexible coil 6 to maintain appropriate tension. The host computer 2 controls the flexible coil 6 to generate a high-frequency magnetic field, which induction heats the workpiece 1. Furthermore, the first temperature sensor 43 and the second temperature sensor 53 monitor the temperature distribution of the welding area in real time and feed the data back to the host computer 2. The host 2 compares and analyzes the real-time temperature with the preset process curve and dynamically fine-tunes the position of the relevant slider unit 8 to compensate for areas with low or high temperatures online, achieving uniform heating and precise temperature control across the entire welding surface. Specifically, the difference between the expected temperature set within the host 2 and the real-time detected temperatures of the first temperature sensor 43 and the second temperature sensor 53 is used to calculate the motion of each servo motor 7. The host 2 controls the servo motor 7 to drive the rack 82, causing the flexible coil 6 to reach the corrected position. The secondary real-time detected temperatures of the first temperature sensor 43 and the second temperature sensor 53 are then fed back to the host 2 to calculate the difference from the expected temperature. While the electromagnetic field in the flexible coil 6 heats the workpiece 1 during welding, a dedicated cooling cavity 63 is provided inside the flexible coil 6. Through the cooling cavity 63, the flexible coil 6 is rapidly cooled, controlling its own temperature to prevent overheating and thus extend its service life and ensure the efficiency of the induction heating process. Finally, after welding is completed, the host 2 controls all servo motors 7 to drive the slider unit 8, causing the flexible coil 6 to return to its initial open shape and position. Subsequently, the first clamping block 4 and the second clamping block 5 are separated, as follows: Figure 10 Once the state shown is reached, the welded part 1 can be removed.

[0027] In summary, this invention provides an electromagnetic induction welding device for automatically matching weldments. The host unit 2 controls the servo motor 7 to drive the slider unit 8, enabling the flexible coil 6 to switch between a closed state (enclosing the weldment 1) and an open state (for picking up and placing the weldment 1). Through the flexible coil design, combined with a multi-degree-of-freedom shape and position adjustment mechanism based on contour recognition, workpiece position recognition, and temperature feedback, this device achieves adaptive and precise matching of the induction coil to various irregularly shaped weldments and closed-loop temperature control, realizing automatic matching of weldments and thus achieving uniform heating. It effectively solves the technical bottlenecks of traditional electromagnetic induction welding, such as poor coil versatility, heating uniformity limited by workpiece shape and position, and excessive reliance on human experience, improving the consistency of welding quality, equipment utilization, and automation level. It is particularly suitable for flexible and intelligent welding production scenarios involving multiple varieties, small batches, or complex-shaped workpieces.

Claims

1. An electromagnetic induction welding device for automatically matching weldments, characterized in that: The system includes a main unit (2), a flexible coil (6), and a form and position adjustment mechanism (3) for clamping or releasing the workpiece (1) and capable of relative movement. The form and position adjustment mechanism (3) includes a first clamping block (4) and a second clamping block (5). The flexible coil (6) is arranged in the first clamping block (4), the second clamping block (5), and the main unit (2). The first clamping block (4) and the second clamping block (5) are respectively equipped with contour sensors for identifying the workpiece (1) in the welding area. The first clamping block (4) and the second clamping block (5) are also respectively equipped with multiple servo motors (7). The system includes multiple slider units (8) connected to servo motors (7), and multiple slider units (8) connected to different points of the flexible coil (6); the first clamping block (4) and the second clamping block (5) are also equipped with temperature sensors for real-time detection of the temperature distribution of the welding part; the contour sensor and the temperature sensor are both connected to the host (2) via signal, and the host (2) is electrically connected to each servo motor (7). Each servo motor (7) pulls or pushes different points on the flexible coil (6) through the slider units (8) connected to it to adjust the shape of the flexible coil (6).

2. The electromagnetic induction welding equipment for automatically matching weldments according to claim 1, characterized in that: The first clamping block (4) and the second clamping block (5) are respectively provided with an arc-shaped storage area one (46) and an arc-shaped storage area two (56) at their relative positions. Both the arc-shaped storage area one (46) and the arc-shaped storage area two (56) accommodate a part of the flexible coil (6).

3. The electromagnetic induction welding equipment for automatically matching weldments according to claim 2, characterized in that: The flexible coil (6) has a cooling cavity (63) inside for forced cooling of the flexible coil (6) during operation.

4. The electromagnetic induction welding equipment for automatically matching weldments according to claim 2, characterized in that: The first clamping block (4) and the second clamping block (5) are respectively provided with a first slide groove (45) and a second slide groove (55) for accommodating servo motors (7). The slider unit (8) connected to the servo motor (7) is also located in the first slide groove (45) and the second slide groove (55). The first slide groove (45) and the second slide groove (55) are respectively connected to the arc-shaped storage area one (46) and the arc-shaped storage area two (56).

5. The electromagnetic induction welding equipment for automatically matching weldments according to claim 4, characterized in that: Multiple first grooves (45) are evenly distributed around the arc-shaped storage area one (46); multiple second grooves (55) are evenly distributed around the arc-shaped storage area two (56).

6. The electromagnetic induction welding equipment for automatically matching weldments according to claim 2, characterized in that: The main unit (2) has a first coil storage area (23) connected to the first arc-shaped storage area (46) and a second coil storage area (24) connected to the second arc-shaped storage area (56).

7. The electromagnetic induction welding equipment for automatically matching weldments according to claim 1, characterized in that: The host (2) is equipped with a first stepper motor (412) and a second stepper motor (512) for driving the first clamping block (4) and the second clamping block (5) to move relative to each other to achieve clamping or separation; the first stepper motor (412) is connected to the first gear (413), and the second stepper motor (512) is connected to the second gear (513); the first clamping block (4) is slidably connected to the first T-slot (21) on the host (2) through the first T-slide (41), and the first T-slide (41) is provided with a first rack (411) that meshes with the first gear (413); the second clamping block (5) is slidably connected to the second T-slot (22) on the host (2) through the second T-slide (51), and the second T-slide (51) is provided with a second rack (511) that meshes with the second gear (513).

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